Nayar, 1969 : 73 A. projectus Cook, 1967 A. spinosus A. incisifrons A. projectus A. incisifrons A. spinosus New records of the water mite genus Arrenurus from India, with the description of one new species (Acari: Hydrachnidia: Arrenuridae) Smit, Harry Pesic, Vladimir Zootaxa 2008 1894 53 58 Walter, 1929 Walter 1929 [151,714,151,177] Arachnida Arrenuridae Arrenurus Animalia Trombidiformes 3 56 Arthropoda species spinosus Arrenurus     Arrenurus (Arrenurus) incisifrons  Nayar, 1969: 73. New syn.  Lundblad (1969)synonymized  A. projectus Cook, 1967with  A. spinosus. K.O. Viets (1987)suspected  A. incisifronsto be synonymous with  A. projectus.We agree with both authors, as both species have a similar shape of the idiosoma and petiole. Therefore  A. incisifronsis now a junior synonym of  A. spinosus.